Ideal viscosity for the fab@home
Hi!
I am from the research group in Universitat de Girona Spain, and we bought a fab@home. We already tried chocolate with a special air heater in the syringe, but we are working in a new project and the materials proposed are any type of polyolefins. (polyethylene, polypropylene etc) but we have no idea of what viscosity (centipoise or any other unit) is the minimum so the fab@home can push through but firm enough that it will "stack up".
Can someone give us a hint with the viscosity?
thanks! we will appreciate it
The viscosity isn't the most important fluid property. A printable material must behave at some level like a bingham plastic (http://en.wikipedia.org/wiki/Bingham_plastic) If the yield stress is low, only thin layers can be made before the material must be cured into a solid. If it is high,fluid can be layered on top of each other before curing occurs. The viscosity is only important in that it effects the pressures required to get the requisite fluid flows.